Hektor the Iron Stomach

Hektor the Iron Stomach (died 431 BC) was a Greek mercenary during the Peloponnesian War.

Biography
Hektor was known for his strange eating habits, often consuming food or drink that nobody else would touch. Over time, he grew used to the diet, and his body could handle anything; it's said that he earned money by eating or drinking weird things in front of drunk patrons at his favorite tavern. In 431 BC, he was hired to track down and kill the mercenary Kassandra at Mount Pentelicus, but Kassandra killed him in battle.